[PATCH] knfsd: nfsd4: refactor exp_pseudoroot

exp_pseudoroot(struct auth_domain *clp, struct svc_fh *fhp,

	       struct cache_req *creq)

{

	struct svc_expkey *fsid_key;

	struct svc_export *exp;

	int rv;

	u32 fsidv[2];

	mk_fsid_v1(fsidv, 0);

	fsid_key = exp_find_key(clp, 1, fsidv, creq);

	if (IS_ERR(fsid_key) && PTR_ERR(fsid_key) == -EAGAIN)

	exp = exp_find(clp, 1, fsidv, creq);

	if (IS_ERR(exp) && PTR_ERR(exp) == -EAGAIN)

		return nfserr_dropit;

	if (!fsid_key || IS_ERR(fsid_key))

		return nfserr_perm;

	exp = exp_get_by_name(clp, fsid_key->ek_mnt, fsid_key->ek_dentry, creq);

	if (exp == NULL)

		rv = nfserr_perm;

	else if (IS_ERR(exp))

		rv = nfserrno(PTR_ERR(exp));

	else {

		rv = fh_compose(fhp, exp,

				fsid_key->ek_dentry, NULL);

				exp->ex_dentry, NULL);

		exp_put(exp);

	}

	cache_put(&fsid_key->h, &svc_expkey_cache);

	return rv;

}